Hi poas I'm not sure if these are the ones.
https://www.natrol.com/prod_women.aspx?prod=169
If so I think they are 50mg according to the link, and it says it's only soy in them so, to match up to clomid you would double the soy. IE. 50 mg of clomid would be equal to 100 mg of soy iso. But I would have a look on google and make sure you know how much is in them first. Ladies take all different doses, I ovulate on my own so took 120 mg cd 3-7. They aren't recommended if you have a normal cycle but I wanted to try for better egg quality so I took them. If you type in soy isoflavones TTC in google you will find loads of info about how they work etc. I would say to research it first as it doesn't work for everyone and also can delay your cycle etc too. Hope this has helped a little good luck honey xx